1389130234 has 4 divisors (see below), whose sum is σ = 2083695354. Its totient is φ = 694565116.

The previous prime is 1389130187. The next prime is 1389130283. The reversal of 1389130234 is 4320319831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1339779609 + 49350625 = 36603^2 + 7025^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1389130234.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347282557 + ... + 347282560.

Almost surely, 2^1389130234 is an apocalyptic number.

1389130234 is a deficient number, since it is larger than the sum of its proper divisors (694565120).

1389130234 is an equidigital number, since it uses as much as digits as its factorization.

1389130234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694565119.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 1389130234 is about 37271.0374687907. The cubic root of 1389130234 is about 1115.7862054752.

The spelling of 1389130234 in words is "one billion, three hundred eighty-nine million, one hundred thirty thousand, two hundred thirty-four".